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Vacuum misalignment corrections to tri-bimaximal mixing and form dominance

Vacuum misalignment corrections to tri-bimaximal mixing and form dominance
Vacuum misalignment corrections to tri-bimaximal mixing and form dominance
Tri-bimaximal neutrino mixing may arise from see-saw models based on family symmetry which is spontaneously broken by flavons with particular vacuum alignments. In this paper we derive approximate analytic results which express the deviations from tri-bimaximal neutrino mixing due to vacuum misalignment. We also relate vacuum misalignment to departures from form dominance, corresponding to complex deviations from the real orthogonal R matrix, where such corrections are necessary to allow for successful leptogenesis. The analytic results show that the corrections to tri-bimaximal mixing and form dominance depend on the pattern of the vacuum misalignment, with the two effects being uncorrelated.
neutrino physics, discrete and finite symmetries
1-30
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538

King, Stephen F. (2011) Vacuum misalignment corrections to tri-bimaximal mixing and form dominance. The Journal of High Energy Physics, 2011 (1), 1-30. (doi:10.1007/JHEP01(2011)115).

Record type: Article

Abstract

Tri-bimaximal neutrino mixing may arise from see-saw models based on family symmetry which is spontaneously broken by flavons with particular vacuum alignments. In this paper we derive approximate analytic results which express the deviations from tri-bimaximal neutrino mixing due to vacuum misalignment. We also relate vacuum misalignment to departures from form dominance, corresponding to complex deviations from the real orthogonal R matrix, where such corrections are necessary to allow for successful leptogenesis. The analytic results show that the corrections to tri-bimaximal mixing and form dominance depend on the pattern of the vacuum misalignment, with the two effects being uncorrelated.

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More information

Published date: January 2011
Keywords: neutrino physics, discrete and finite symmetries

Identifiers

Local EPrints ID: 179031
URI: http://eprints.soton.ac.uk/id/eprint/179031
PURE UUID: 39c64006-59ae-46d0-b255-569dbe1dc1fd

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Date deposited: 31 Mar 2011 10:57
Last modified: 16 Jul 2019 23:44

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